18/09/2026
Is your Aimpoint ACRO pattern in spec?
The Forward Controls Design OPF-G6, ACRO plate product page has an excellent breakdown of considerations for the ACRO pattern and contains a snippet of the ACRO drawing to show critical areas (Photo 2).
https://www.forwardcontrolsdesign.com/OPF-G6-ACRO-G***k-Gen-6-ACRO-plate_p_685.html
Cuts and plates vary in spec and materials (even at the OEMs), which can create issues of zero shift or the clamp failing completely. Note the Steiner MPS uses the ACRO pattern and it is NOT a different pattern (confirmed by Steiner). BOTH call for STEEL to be used as the plate material. FCD adheres to the ACRO drawing and opted for 17-4 SS, nitride.
For plates to be effective the design must consider the host platform specs in addition to the optic pattern specs. Any deviation from these specs in critical areas creates opportunities for failure. The dovetail and clamp specs are the most critical portions for this pattern. (Photos 1, 2, 3, 4, 5)
The Gen 6 ORS contains a rear locking tab that is uniquely shaped. It isn't just shelf for plates to sit on. FCD recognizes this detail and incorporates a pocket in their Gen 6 plates to engage the tab and prevent plate movement. This feature requires that the plate is indexed at the tab before seating. The lockup is so secure that (without fasteners) my sample did not fall out when turned upside down and shaken. (Photos 6, 7, 8, 9)
Speaking of fasteners, FCD opted to use the M4 holes as it is larger than the 6-32. The selected fasteners are rated for 140K PSI in tensile strength (damn, son). The plate was designed to fully support the M4's 90-degree countersink (recessed flush) VS chasing the lowest deck height. I agree with not sacrificing interface integrity on potentially life-saving equipment. (Photos 10, 11, 12, 13)
The Gen 6 ORS cut depth is higher than direct milled options, so this combo will sit above the slide. The sample Ameriglo GL-429 shown is too low to co-witness. You will need 3XL or higher irons to suit your preferences (2XL for MPS). The FCD product page has an irons compatibility resource available. (Photos 14, 15, 16, 17)
There is more to cover but I am out of space. Deuces
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